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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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Your heart beats over 36 million times a year.

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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

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Approximately 25% of all reported medication errors result from some kind of name confusion.

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